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- For all owners of the somewhat infamous and oft-maligned Qubie' Modem:
-
- A "QUICK AND DIRTY" FACTORY FIX !!!
- ===================================
-
- I have been a beleagured and frustrated owner of the Qubie'internal modem
- since January 1984. Virtually from the first day that I put my first QB
- modem (Iam now working with a replacement) on this BBS I have experienced
- the abominable level of bit error rates during file transfers that have
- been most adequately described in this message system by other users. It
- must be noted, however, that I have encountered such difficulties on only
- three bulletin boards out of the 5060 that I have worked across the
- country:
-
- 1. Plantz PC BBS ... (8824227 and 8824228)
- 2. Bridgeport RCPM ... 3264392
- 3. Lain's Bolingbrook PC BBS ... 9720628
-
- In all other cases, both my original QB modem and its replacement performed
- flawlessly at 1200 baud with bit error rates approximating almost precisely
- those stated for the Hayes 1200 series units. This fact, of course,
- implied to me that there was nothing really wrong with the QB modem. That
- my problem, and those experienced by others, were entirely traceable to
- conditions on the host side of the communications line. Consequently, I
- have for months tolerated degraded transfer rates and a few disconcerting
- system "hangups" while online with the above cited bulletin board systems.
-
- A few days I happened to call the Qubie' people about another matter,
- mentioning my continuing hassle with three of my favorite boards.
- Immediately, the QB rep recommended a fix for my problem:
-
- A. Remove the Qubie' modem board and locate potentiometer R 32
- just beneath the speaker. This pot adjusts the incoming carrier
- signal level.
-
- B. With small jeweler's screwdriver, adjust this pot ... first in
- in halfturns and subsequently, in quarterturns ... clockwise to
- increase or counterclockwise to reduce the carrier.
-
- C. Replace the modem board and dial up the problem BBS and check for
- "glitches" or number of receive errors during XMODEM transfer of
- a file of about 100 blocks or so in size. Repeat adjustment
- procedure until error rate is reduced to an acceptable level.
-
- I hope this remedy works as well for you as it has for me. If you have
- questions, please feel free to call me at 7444105 during the workday or
- 9785088 evenings after 9:00 PM.
-
- Reggie Jones
-